Title:
BEARING FOR MAIN ELECTRIC MOTOR, SUPPORT STRUCTURE OF MAIN ELECTRIC MOTOR SPINDLE AND MAIN ELECTRIC MOTOR OF RAILWAY VEHICLE
Document Type and Number:
Japanese Patent JP2016142401
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To improve the durability of a main electric motor of a railway vehicle.SOLUTION: A bearing 86 for a main electric motor which rotatably supports a spindle 20 of the main electric motor of a railway vehicle around an axis comprises an outer ring 86a, an inner ring 86b, a plurality of rolling bodies 86c and a cage. The outer ring 86a has an outer ring rolling face at an internal peripheral face. The inner ring 86b has an inner ring rolling face at an external peripheral face, and is arranged inside the outer ring 86a so that the inner ring rolling face opposes the outer ring rolling face. A plurality of the rolling bodies 86c contact with the outer ring rolling face and the inner ring rolling face, and are aligned on an annular raceway. The cage holds the rolling bodies 86c. The outer ring 86a has a surface which continues to the internal peripheral face, and includes protrusions 86d, 86e which protrude to a direction along the axis.SELECTED DRAWING: Figure 5
Inventors:
YOSHIOKA SHINICHI
Application Number:
JP2015021218A
Publication Date:
August 08, 2016
Filing Date:
February 05, 2015
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F16C33/66; B61C9/38; F16C19/06; F16C23/06; F16C33/58; F16C35/077; H02K5/173
Attorney, Agent or Firm:
Fukami patent office